Burning fluid fuel



May 30, 1939.

W. FERGUSON BURNING FLUID FUEL Filed April 8, 1936 frwerzion WWI/Fer momPatented May 30, 1939 PATENT orrie .BURNING FLUID FUEL William Ferguson,Philadelphia, Pa., assignor to National Airoil Burner Company,Incorporated, a corporation of Delaware Application April 8, 1936,Serial No. 73,319

2 Claims.

My invention relates to improved method and means for burning a gas.

The object is to introduce or project a jet of gas from a source ofsupply, into a place of combustion where the same is mixed with air,ignited and burned, and to maintain the jet of uniform or constantcross-section and Volume, by initiating the jet at a point substantiallyin advance of and removed from the place of mixing ignition andcombustion.

This object is attained by protecting the jet orifice from the radiantheat of combustion.

By this method the orifice, which initiates the jet, is sufiicientlyprotected from the heat of combustion, or radiant heat, to prevent theorifice from being clogged.

In accordance with the common practice, the combustible mixture of gasand air'is delivered through the orifice directly to a combustion space,so that the heat of combustion frequently causes accumulations around orin the orifice, which tend to clog or choke the same, as by coking,

sulphurization, or the like.

Referring to the drawing, which illustrates merely by way of example,suitable means for the embodiment of my invention;

Fig. 1 is a view in section showing the relation of the tip or orifice,the protecting channel or passage, the source of gas and the place ofignition and combustion,

Fig. 2 is a-fragmentary plan view.

Similar numerals refer to similar throughout the several views.

In the construction illustrated in Fig. .1, the body 5 is threaded intothe wall 6, which separates the place of ignition and combustion I, fromthe chamber 8 containing the gas supply. The body 5 is provided with thepassage or channel 9. Body 5 is also provided with the orifice I0,between the gas supply in chamber 8,'and the channel or passage 9.

The gas is projected through the orifice II], in the form of a jet l I,which passes entirely through parts the passage or channel 9, into theignition and the combustion space I, where it is mixed with air..

The vent or orific I0 is screened or protected by the wall of thechannel 9 from a large percentage of radiant heat of the furnace, sincethe angle of part of its longitudinal extension, into the chamber 8containing the supply of gas. The result of this arrangement is thatsaid body 5 is immersed in said comparatively cool gas. This servesfurther to reduce the temperature of said body 5, and thus protect theorifice. This arrangement permits the use of other than refractory orceramic'material, such as lava, in constructing the body 5,

The relative dimensions of the body 5 may be varied to suit varyingconditions. 1

The variations in the ratio between the orifice and the channeldiameter, between the orifice and. the depth or length of channel orpassage 9, and the depth of immersion in the gas, will vary dependingupon the quality of the gas, as to moisture content, sulphurouscompounds, and th temperature at which the furnace operates.

What I claim is:

1. In combination with a furnace combustion chamber and a fuel gassupply chamber, a gas burner tip comprising a chambered body open at oneend and provided at the other end with a gas orifice, the open end ofsaid body being seated in a supporting wall between the furnacecombustion chamber and the gas supply chamber and delivering directly tosaid combustion chamber for mixing with air therein, the margin of theopen end of said tip being approximate the inner surface of saidsupporting wall, the opposite end of the tip, which is provided with theorifice, being in communication with the gas supply, the said orificebeing positioned at a point sufficiently remote from the place ofcombustion in the furnace chamber to secure the protection of theorifice by the walls of the chambered body from the heat of the furnace.

2. In combination with a furnacecombustion chamber and a fuel gas supplychamber, a gas burner tip comprising a chambered body open at one endand provided at the other end With a gas orifice, the open end of saidbody being seated in a supporting wall between the furnace combustionchamber and the gas supply chamber and delivering directly to saidcombustion chamber for mixing with air therein, the margin of the openend of said tip being approximate the inner surface of said supportingwall, the opposite end of the tip, which is provided with the orifice,being in communication with the gas supply, the said orifice beingpositioned at a point sufiiciently remote from the place of combustionin the furnace chamber to secure the protection of the orifice by thewalls of the chambered body from the heat of the furnace, andthe'greater extent of said tip being immersed in the gas supply andpartaking of its temperature,

WILLIAM FERGUSON.

